content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You under the Apache License, Version 2.0
   *  (the "License"); you may not use this file except in compliance with
   *  the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  
  /**
  * @author Alexander V. Esin
  */
  
  package android.org.apache.harmony.security.x509;
  
  /**
   * Text utils for processing DN string representations
   */
  
  public class Utils {
      
      /**
       * Checks if the string is PrintableString (see X.680)
       * @param str input string
       * @return true if the string is PrintableString, false otherwise
       */
      public static boolean isPrintableString(String str) {
          for (int i= 0; i< str.length(); ++i) {
              char ch= str.charAt(i); 
              if (!(ch== 0x20 
                  || ch>= 0x27 && ch<= 0x29 // '()
                  || ch>= 0x2B && ch<= 0x3A // +,-./0-9:
                  || ch== '=' 
                  || ch== '?'
                  || ch>= 'A' && ch<= 'Z'
                  || ch>= 'a' && ch<= 'z')) {
                  return false;
              }
          }
          return true;
      }
  }    